[frank-w-bpi-r2-4.14:7.1-rc 0/167] drivers/net/bareudp.c:288:12: sparse: sparse: incorrect type in assignment (different address spaces)

[frank-w-bpi-r2-4.14:7.1-rc 0/167] drivers/net/bareudp.c:288:12: sparse: sparse: incorrect type in assignment (different address spaces)

[kernel test robot]

tree:   https://github.com/frank-w/BPI-R2-4.14 7.1-rc
head:   866eb49750d39fe938dca71acece6f1540bb1123
commit: bc773b15eb19ae3e27dd3a3377f2fe006ce5f382 [0/167] bareudp: Store struct sock in struct bareudp_dev.
config: i386-randconfig-062-20260702 (https://download.01.org/0day-ci/archive/20260703/202607031901.7dWzEObt-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260703/202607031901.7dWzEObt-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: bc773b15eb19 ("bareudp: Store struct sock in struct bareudp_dev.")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607031901.7dWzEObt-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/net/bareudp.c:288:12: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sock *sk @@     got struct sock [noderef] __rcu *sk @@
   drivers/net/bareudp.c:288:12: sparse:     expected struct sock *sk
   drivers/net/bareudp.c:288:12: sparse:     got struct sock [noderef] __rcu *sk
   drivers/net/bareudp.c:623:20: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __be16 [usertype] port @@     got unsigned short @@
   drivers/net/bareudp.c:623:20: sparse:     expected restricted __be16 [usertype] port
   drivers/net/bareudp.c:623:20: sparse:     got unsigned short
   drivers/net/bareudp.c:624:25: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __be16 [usertype] ethertype @@     got unsigned short @@
   drivers/net/bareudp.c:624:25: sparse:     expected restricted __be16 [usertype] ethertype
   drivers/net/bareudp.c:624:25: sparse:     got unsigned short

vim +288 drivers/net/bareudp.c

   283	
   284	static void bareudp_sock_release(struct bareudp_dev *bareudp)
   285	{
   286		struct sock *sk;
   287	
 > 288		sk = bareudp->sk;
   289		rcu_assign_pointer(bareudp->sk, NULL);
   290		synchronize_net();
   291		udp_tunnel_sock_release(sk);
   292	}
   293	

--
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https://github.com/intel/lkp-tests/wiki